Topics in Catalysis

, Volume 61, Issue 15–17, pp 1624–1632 | Cite as

Enhanced Stability and Propene Yield in Propane Dehydrogenation on PtIn/Mg(Al)O Catalysts with Various In Loadings

  • Weerachon Tolek
  • Kongkiat Suriye
  • Piyasan Praserthdam
  • Joongjai PanpranotEmail author
Original Paper


The dehydrogenation of propane on In-promoted Pt (0.3 wt% Pt) supported on hydrotalcite Mg(Al)O with different In loadings (0.2–1.0 wt% In) was investigated at 550 °C atmospheric pressure. All the bimetallic PtIn/Mg(Al)O showed higher propane conversion and propene selectivity than the Pt/Mg(Al)O with Pt0.8In exhibited the best catalytic performances with 97.5% propylene selectivity and 27.5% yield after 5 h time-on-stream. The addition of In to the monometallic Pt catalyst could reduce the acidity strength especially the strong acid site. As revealed by the H2-TPR and XPS results, addition of In by impregnation on Pt/Mg(Al)O also led to the formation of metallic In and PtIn alloy, which greatly enhanced the catalyst activity and reduced coke formation on the support. Nevertheless, excessive In loading (i.e., Pt1.0In) resulted in a descending trend of catalyst activity compared to the Pt0.8In, due probably to the large amount of metallic In being formed, which was disadvantageous in propane dehydrogenation.


Propane dehydrogenation Hydrotalcite PtIn bimetallic catalyst XPS Indium 



The authors would like to thank SCG Chemical Co., Ltd. for the scholarship for W.T., the financial supports, and research facilities provided. The financial support from the Thailand Research Fund is also gratefully acknowledged.


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of EngineeringChulalongkorn UniversityBangkokThailand
  2. 2.SCG Chemicals Co., Ltd.BangkokThailand

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